lol

1234567891011121314151617181920
Across
  1. 3. vital organ
  2. 6. negative condition
  3. 7. plural of atrium
  4. 9. carry blood to the heart
  5. 12. exchange substances with cells
  6. 14. lump of blood
  7. 16. liquid that carries everything
  8. 17. the hearts four different sections
  9. 19. tube that blood moves in
  10. 20. small fragments of cells
Down
  1. 1. high blood pressure
  2. 2. fight against disease
  3. 4. abnormal heartbeat
  4. 5. the main and largest artery
  5. 8. carry blood away from the heart
  6. 10. carries oxygen
  7. 11. tissue that transports substances
  8. 13. delivery service for your body
  9. 15. organelle that contains DNA
  10. 18. biconcave shaped thing